A General Synthesis of Indole-3-carboxylic Esters by Palladium-Catalyzed Direct Oxidative Carbonylation of 2-Alkynylaniline Derivatives
作者:Bartolo Gabriele、Lucia Veltri、Raffaella Mancuso、Giuseppe Salerno、Mirco Costa
DOI:10.1002/ejoc.201200120
日期:2012.5
A generalsynthesis of indole-3-carboxylicesters by direct Pd-catalyzed oxidativecarbonylation of readily available 2-alkynylanilinederivatives is reported. In particular, 2-alkynylanilines bearing an internal triple bond and a secondary amino group (1) were directly converted into indole-3-carboxylicesters 2 in fair to good yields (50–84 %) when let to react with CO, O2, and an alcohol in the